Kluber pitched seven scoreless innings before leaving Monday's game against the Royals with a right calf cramp, Jordan Bastian of MLB.com reports.
Kluber was pitching decently before sustaining the injury, giving up five hits and three walks with eight strikeouts. Unfortunately, the Indians' bullpen conspired to give up seven runs over an inning of work after he departed, leading to a loss. Nonetheless, Kluber's injury is not considered serious, so he'll likely be ready for his next start.